14845366821 has 4 divisors (see below), whose sum is σ = 19793822432. Its totient is φ = 9896911212.

The previous prime is 14845366819. The next prime is 14845366871. The reversal of 14845366821 is 12866354841.

14845366821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 14845366821 - 2¹ = 14845366819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14845366801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2474227801 + ... + 2474227806.

It is an arithmetic number, because the mean of its divisors is an integer number (4948455608).

Almost surely, 2^14845366821 is an apocalyptic number.

It is an amenable number.

14845366821 is a deficient number, since it is larger than the sum of its proper divisors (4948455611).

14845366821 is an equidigital number, since it uses as much as digits as its factorization.

14845366821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948455610.

The product of its digits is 1105920, while the sum is 48.

The spelling of 14845366821 in words is "fourteen billion, eight hundred forty-five million, three hundred sixty-six thousand, eight hundred twenty-one".